Introduction to Normal Distributions

Which distribution has the smallest standard deviation?

• red

• yellow

• green

• blue

• they are all the same

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CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

Which distributions have the same mean? Check all that apply.

• red

• yellow

• green

• blue

• none of them have the same mean

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CCSS.HSS.ID.A.2

Find the area under the standard normal curve that is to the left of z=0.88.

• 0.1894

• 0.8106

• 1.1750

• -1.1750

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CCSS.HSS.ID.A.4

Find the area under the standard normal curve that is to the right of 0.46

• 0.1004

• .3111

• 0.6772

• 0.3228

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CCSS.HSS.ID.A.4

Find the area under the standard normal curve that is between z=-1.5 and z=2.5

• 0.9270

• 0.0606

• 0.9938

• 0.0062

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CCSS.HSS.ID.A.4

1.  Which best describes the shaded part of this normal distribution graph?  

• All data that is one or higher.
• All data that is one or more standard deviations above the mean.
• All data that is between 1 and 3.
• All data that is above the mean.

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CCSS.HSS.ID.A.4

What shape is a normal distribution curve?

• Half curve
• Round curve
• Bell curve
• Square curve

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CCSS.HSS.ID.A.3

The mean temperature in Glens Falls for the month of February is 23 degrees with a standard deviation of 4.2 degrees.  What is the z-score for a temperature of 17 degrees?  

• 1 
• 1.43
• -1.43
• 11.5

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CCSS.HSS.ID.A.4

Find the area of the shaded region.

• 0.16

• 0.84

• 0.68

• 0.34

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CCSS.HSS.ID.A.4

Find the value for 
P(Z > 1.78)

• 0.0376
• 0.0375
• 0.0446
• 0.2420

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CCSS.HSS.ID.A.4